Dec 10, 2019 7:00 pm EDT
Categorized: Medium Severity
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The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.
Affected product(s) and affected version(s):
|UCR – IBM UrbanCode Release
Refer to the following reference URLs for remediation and additional vulnerability details:
Source Bulletin: https://www.ibm.com/support/pages/node/1127991